13.4
If the inverter is equipped with the Profibus module CM-PDPV1 or an expansion mod-
ule with Systembus, the function
verts frequency values in Profibus notation (see chapter 13.4.5 "PZD2, reference val-
ue/actual value") to frequency values in internal notation and vice versa.
Convert-Reference
1374
xxx.xx Hz
The scaling for In_F_PDP_word1/2 and Out_F_PDPconv_word1/2 is:
Reference value
The possible range = ±200% = +32768 to -32768 = 0x7FFF to 0x8000
This function uses its own reference value
sion. The benefit of this function is the usage of the word data type for frequency
values, instead of long.
Note:
08/08
08/08
Frequency conversion PDP word
notation
Frequency Converter Profibus Notation/Internal Notation
In-F-PDP-word1
1370
In-F-PDP-word2
1371
In-F-intern-long1
1372
In-F-intern-long2
1373
Standardization
Binary
14
+ 100%
+ 2
14
- 100%
- 2
The usage of this function and the usage of In-PZD/Out-PZD objects is
shown in the sample project documented with:
− CM_PDPV1_conf.pdf Cluster with one inverter and CM-PDPV1 and three
− CM_PDPV1_S7.pdf
− CC_0B2C.zip
− S7-SoftwareOB1.pdf Listing of OB1 from STEP7 project
CM-PDPV1
CM-PDPV1
convert PDP/intern
is available. This function con-
774 - Out-F-PDPconv-long1
X
X
775 - Out-F-PDPconv-long2
X X
776 - Out-F-PDPconv-word1
/
777 - Out-F-PDPconv-word2
/
Decimal
Hexadecimal
16384
49152
Convert-Reference
additional inverters coupled by Systembus
Functional description
Complete STEP7 project including samples for
In/Out-PZD usage and parameter access via PKW
object and V1 channel
inverter internal
0x4000
0xC000
1374 for data conver-
35
35
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